621412442 has 16 divisors (see below), whose sum is σ = 1121346240. Its totient is φ = 252302688.

The previous prime is 621412417. The next prime is 621412483. The reversal of 621412442 is 244214126.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1167803 + ... + 1168334.

It is an arithmetic number, because the mean of its divisors is an integer number (70084140).

Almost surely, 2^621412442 is an apocalyptic number.

621412442 is a deficient number, since it is larger than the sum of its proper divisors (499933798).

621412442 is a wasteful number, since it uses less digits than its factorization.

621412442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336165.

The product of its digits is 3072, while the sum is 26.

The square root of 621412442 is about 24928.1455788432. The cubic root of 621412442 is about 853.3489298026.

Adding to 621412442 its reverse (244214126), we get a palindrome (865626568).

The spelling of 621412442 in words is "six hundred twenty-one million, four hundred twelve thousand, four hundred forty-two".